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Finding the Third Proportional to 192.38 and 265.78

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Solution

The third proportional to 192.38 and 265.78 is: 367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.38 : 265.78 = 265.78 : x
  2. Step 2: Convert to fraction form
    192.38/265.78 = 265.78/x
  3. Step 3: Cross multiply
    192.38x = 265.78 × 265.78
  4. Step 4: Simplify right side
    192.38x = 70,639.67
  5. Step 5: Solve for x
    x = 70,639.67/192.38
  6. Step 6: Final answer
    x = 367.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.